Push-button apparatus for multiple-unit door-control systems



July 10, 1928. 1,676,743.'

A. F. PAUL Pusq/ au'r'rou APPARATUS Fon MULTIPLE UNIT Doox commonSYSTEMS F11-d Deo. 17. 1921 2 sheets-sheet 1 I e vl-:N'ron BY ATTORNFY5W /Zyf nl' lsslrrrfllllllllu July 10, 1928.

A. F. PAUL PUSH BUTTON APPARATUS FOR MULTIPLE UNIT DOOR CONTROL SYSTEMSFiled Dec. 17. 1921 2 Sheets-Sheet 2 'IlIIIlIllIlIIl/ll'll' y' `rQ0ldrllENToR ATTORNEY 5 Patented July l0, 1928.

UruTED` STATES, PATENT OFFICE.

ABRAM FRANK PAUL, OF LLANERCH, PENNSYLVANIA, ASSIGNOR TO NATIONAL PNEU-MATIC COMPANY, OF NEW YORK, N. Y., A CORPORATION O F WEST VIRGINIA.`

PUSH-BUTTON APPARATUS FOR MULTIPLE-NIT DOOR-CONTROL SYSTEMS.

Application flied December 17, 1921. seriai No. 523,077.

tive arrangement of parts. all as will be more fullyhereinafter setforth, as shown 1n thel accompanying drawings and finally pointed out inthe appended claims.

Referring to the drawings:

Fig. l is a view in front elevation with some parts broken away showinga slightly modified arrangement embodying the principles of myinvention.

Fig. 2 is a View in transverse sec-tion on the line eli- 4, Fig. l,looking in the direc-A tion of the arrows.

Fig. 3 is a View similar to Fig. l showing modified forms of push buttoncontrol apparatus. y

Fig. 4 is a view similar to Fig. l showing another modified arrangementembodying the principles of my invention.

Fig. 5 is a view in vertical section on the line 7 7, Fig. 4.-, lookingin the direction of the arrows. y

Fig.6 is a View similar to Fig. land partly in sec-tion onthe line 8 8,Fig. 7, showing still a. further slightly modified arrangement. v

i-Fig. 7 is a view in transverse section on the line 9-9, Fig. 6,looking in the direction of the arrows.

Fig. 8 is a view of another modification.

In the modern multiple unit door control system for use on cars ortrains of cars, particularly cars or trains employed in surface,subwayand elevated street car transporting systems, it is a common practice toemploy push buttons for controlling the circuits of the motors by whichthe car doors are operated. In such systems the control of a number ofdoors on a car or train of cars is located at a control point orstation, and for effectivecontrol of the car operating motors it issometimes desirable to be able to selectively operate or control theoperationvof the door operating motor of the individual doors. At othertimes it is desirable to be able to simultaneously operate or controlthe operation of all of i the door operating motors on any particularcar yor on several cars,

It is among the special purposes of my present inventionv to provide apush button control apparatus which enables the selective operation ofindividual push buttons controllingthecar door operating motors forindividual doors and which apparatus is also capable of group operationsimultaneously of a'plurality of the push buttons thereby enabling anoperator at the control station to operate or cont-rol any particularcar door Voperating motor or, at will, simultaneously controllingv thevpush buttons in the circuits of a plurality of door motors.

In the accompanying drawings I have shown various arrangements embodyingthe general principles of a push button control apparatus which permitssuch selective operation of individual push buttons and also asimultaneous operation of circuit closures for agroup or a number ofmotor circuits.

In Figs. l and 2 I have shown an arrange ment wherein the circuitterminals l1 are controlled by the individual push buttons ll2 operatingthe bridging contact member 14. The master push button20, mounted in thecontrol case 21, when actuated, engages an arm 22 connected lto a shaft23. This shaft is journaled within the casing 21 and care ries a numberof crank arms 24:, each carrying a bridging contact member 25 eachdisposed in cooperative relation with respect to a pair of circuitterminals l1. When the master push vbutton is'manipulated the shaft 23is rocked thereby causing the crank arms 24 thereon to move thecontactors 25 into contact withrtheir respective pairs of terminals 11,hence securing a simu taneous closing of all of the circuits, theterminals of which lead into the box, leaving the operator or attendant,however, free to independently and selectively operate any individualpush button 12. The contactors 25 may be returned to their withdrawnposition in any suitable manner. I have shown in this instance aretracting spring 26 for this purpose (see Fig. 2).

In 3 I have shown two modified arrangements, the one in the upper partof the figure consisting of a master push button CIK tactors 30 aremoved into position simulta-k neously to closerthe circuit betweenltheir respective pairs olV terminals 33. rlhisvleaves each pair olterminals 33j to be bridged independently and individually by the usualpush buttons indicated in dotted lines at V3ft. In the lower part oit Fi g. 3 a master push button 35 is shown tor projecting longitudinally arod 3G which, when projected endvvise, eilects the roclrin'gottheplurality ojt contacter arms 37' through linlr connections, indicated at38, with the rod 3G, or by` means of pins 39, carried by the rod andengaging the contactor arins. vThus, by the pressing oi the push buttonl'the various pairs ot terminals 39 are closedby their respectiveContaetor arms 37', the closure being'siijijiultaijieous to all of thepairs ol circuit terminals 39, leaving' each pair of tern'iinals tree tohe closed through the usual and ordinary push button indicated in dottedlines at 4:0.

In Figs. l and 5a slightly modilied arrangement is shown wherein themaster push button il effects the lrocking of, the rocked shaft 42through the link and crank arm connections d3., said shaft 4t2, which isjournaled to rock Within the casing Llei, has crank arms lthereonwhichcarry contacter members 46 disposed in such relation with respectto the terminals 4,7 asv tol Close the circuit between thein When theshalt 4t2 is rocked by the manipulation of push button l1. This leavesthe Vterminals 39 to, be individually and selectively closed by themanipulationo'l1 the usual and ordinary push but-ton i8 carryin,rcontacter bars 49,

In Figs, G and 7 I have shovvn the master control button 50 operating abar 5l disposed t0 extend crosswise of the various pairs ofterminals152l and beneath the same so that the contactors 53,carriedthereby, may be withdrawn from bridging contact with the pairsofterminals 52 by the-action oi' gravity. This arrangement leaves eachpair of terminals 52 to be selectively and individually closedA to eachother by the ordinary push button 54 and its bridging contacter 55. y

In Fie'. 8 I have shown a modilied torni or' my invel tion which is verysimple in construction, yet is exceedingly desirable and el'- iective inoperation. In this type oi" construction the master contr-ol button.v 56i; integrally attached to the operating` bar 57, which bar carries aplurality of springs 58, and contactors 59, tor closing all the circuitswhen' the inas'tercontrol button is pushed Vin andthe terminals 1lbecome engaged. Each pair of terminals 1l may alsovbe closed by aseparat-e push'button 12, Afor actuating?r contactors lil in the mannershown and described in connection with F'igs'l, 2. 3 and 4t.

From the foregoing description it will he Aseen that I provide invariouspractical simple embodiments the push button controlsystein'which permits the selective and' individual control of theactuatinginotors, of individualdoors and at the Sametime perinits olLsimultaneous control. ol' ther motors oi a plurality or group otdoorrmotors.

Having non;Y set forth the objects and nalill ture et my invention. andvarious constructions en'ibodying;v the princi ples thereof, what Iclaim as new and useful and ot my own invention anddesire to secure byLetters Pat- @niais Y v l. In a multiple vcircuit control device theconibination ot a plurality of circuit terminals, independent means forclosing the circuit to each individual pair of contacts, a rod having` aplurality of contact lingers thereon for simultaneously closing' thecir- FRANK] PAUL`

